I'm using XP and it works here with hardware synths, including the SD-2, among others. USB or Soundcard MIDI inputs and outputs.

Try this, it may clear the problem:

No matter what you really intend to use for MIDI output, hit the Prefs and select the Use DXi button, invoke something DXi like the VSC for the default synth. Play any MIDI file for a few bars to ascertain that the DXi synth is working, then close down RB.

Reopen RB and revisit the default MIDI settings, change 'em back to the USB port and see if it works.

If it does, it will likely work that way forever.


--Mac